I have one of those ; You got ram in the right slots ie
if running dual slots in blue lanes.
I using KVR16LN11/8 Kingston (2*8Gb).
Runs all 3rd Gen but not 2nd Gen which req 1333Mhz.
Also check your cpu power connectors are clicked in properly.
Had one once where i hadn't clicked in on the psu properly;
gave same symptoms.